Refrigerator



(No Model.) Y 2 Sheets-Sheet 1.

J. C. MURPHY.

REPRIGERATOR.

Patented May 21,' 1895.

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llNrrED STATES ATENT Prion.

JOHN C. MURPHY, OF BALTIMORE, MARYLAND, ASSIGNOR OF ONE-HALF TO MICHAEL MURPHY, OF CHICAGO, ILLINOIS.

REFRIGERATOR.

SPECIFICATION forming part of Letters Patent N0. 539,756, dated. May 21, 1895. Application tiled July 5, 1894. Serial No. 516,527: (Nomodel.)

To a/ZZ whom it may concern:

Be it known that I, JOHN C. MURPHY, of the city of Baltimore and State of Maryland, have invented certain Improvements in Refrigerators, of which the following is a specification.

This invention relates to certain improvements in that class of refrigerators in which the cooling effect is produced by the evaporation of water, the walls of the chamber being made ofsome porous material,snch as earthenware and made double whereby water may be' stored, as will hereinafter fully appear.

In'the further description of the said invention which follows, reference is made to the accompanying drawings, forming a part hereof, and in which- Figure l is a sectional elevation of the improved refrigerator, and Fig. 2 a section of Fig. l, taken on the dotted line fr a: and without a certain lid hereinafter described. Fig. 3 is a sectional plan of Fig. 1 taken on the dotted line y y.

Referring now to the drawings, A represents the body of the refrigerator, formed of some porous material such as terra-cotta. Its walls a are double so as to form spaces b for water. C is a top adapted to cover the body A and it is hollow so as to contain water as does the body. D isa hollow boss projecting from the wall c of the top, and extending upward to near the upper wall 0l which has an opening f directly over the said boss. This opening is closed by'a removable lid E which has a handle g. The hollow boss D has holes h in itscrown which are in' communication with similar holes z' in the lid and handle.

The object of the hollow boss and the holes leading therefrom, is to allow of the escape of warm air from the interior of the refrigerator.

On one side of the body A is an opening F having a door frame j around it, and exteriorly of the door frame is a grooved projection l.: into which the rabbet m of a door G is replaced on the body, and the refrigerator is ready to receive its contents or the articles to be preserved. The material of the refrigerator being of a porous nature the water percolates through the walls, and owing to the evaporation of water on the surfaces exposed to the air,--the whole apparatus is cooled.

To keep the refrigerator in condition, it is only necessary to replenish the water when it becomes partially exhausted.

The articles to be kept are either introduced by way of the sliding door or they may be placed in the body after the temporary removal of the top.

I claim asfmyinventionl. In a refrigerator formed of porous material, the combination of a body having hollow walls, and a removable hollow top, the said top having a hollow boss with holes in its specied.

2. In a refrigerator, formed of some porous material, the combination of a body having hollow walls, one of whichis provided with a crown, and a perforated lid, substantially as door frame and a hollow sliding door, a hol-VM low top having a hollow boss with its Vcrown perforated and covered with a perforated lid, substantially as specified.

JOHN C. MURPHY. 

